Precision Machining | Custom Parts & Production Parts

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Precision Machining Capabilities

Precision machining involves advanced CNC machines that shape parts according to extreme accuracy within micron-level tolerances.

Precision Milling

From complex 3D contours to fine-featured flat surfaces, our precision milling process ensures each part is machined to exact specifications, with micron-level tolerances and superior surface finishes.

Precision Turning

Whether you're in aerospace, automotive, medical or industrial manufacturing, we specialize in turning components that demand micron-level precision and repeatable quality.

Precision Grinding

When tolerances are tight and surface finishes matter, our precision grinding services deliver unmatched accuracy and consistency. We specialize in ultra-precise grinding solutions for components that demand exacting standards.

Precision EDM & Wire EDM

For delicate contours, fine holes or tight internal radii, our state-of-the-art EDM technology makes it possible—with sub-micron precision and minimal thermal distortion.

Tolerances for Precision Machining

Whether you're manufacturing aerospace components, automotive parts, medical devices or high-performance motorsport assemblies, selecting the right tolerance is essential to balancing performance, manufacturability and cost.

Tolerance Class	Typical Tolerance Range	Application Examples	Notes
Standard Machining	±0.1 mm to ±0.05 mm	General-purpose parts, brackets, housings	Suitable for non-critical fits and assemblies.
Semi-Precision	±0.05 mm to ±0.02 mm	Automotive parts, enclosures, some fixtures	Good for components with moderate fit and function requirements.
Precision Machining	±0.02 mm to ±0.01 mm	Engine components, bearing housings, mold bases	Common for high-performance mechanical assemblies.
High-Precision	±0.01 mm to ±0.005 mm	Aerospace parts, high-performance valves, spindles	Requires stable environments and careful tool wear control.
Ultra-Precision	±0.005 mm to ±0.001 mm (or finer)	Optical components, instrumentation, semiconductor tooling	Typically done on specialized equipment like jig borers, grinding, EDM.

Precision Machining Design Guidelines

Read our design guidelines to optimize production efficiency. From precision prototypes to high-volume production runs, our experts offer immediate feedback to ensure optimal results.

Feature	Design Recommendation	Notes / Best Practices
Tolerances	Apply tight tolerances only where functionally necessary	Looser tolerances reduce cost and lead time without sacrificing function.
Wall Thickness	Maintain a minimum wall thickness of ≥1 mm for metals	Thin walls can vibrate or deform during machining.
Hole Sizes	Design standard hole sizes (e.g., Ø3, Ø6, Ø10 mm)	Standard drill sizes are more economical and faster to machine.
Hole Depths	Keep depth ≤3× diameter for blind holes	Deeper holes require special tools or peck drilling.
Internal Radii	Use fillets with radius ≥0.5 mm in internal corners	Sharp corners are hard to machine and increase tool wear.
Undercuts	Avoid or clearly specify undercuts	Requires custom tools or secondary operations.
-ed Features	Use standard thread sizes (e.g., M6, ¼-20) and avoid threads too close to edges	Allow adequate clearance for tool engagement.
Flatness & Parallelism	Specify only when critical for function	Can increase machining time; use GD&T where appropriate.
Surface Finish	Match to function (e.g., Ra 1.6–3.2 µm for most metal parts)	Finer finishes often require grinding, polishing, or slow machining passes.
Part Symmetry	Use symmetrical designs when possible	Aids in fixturing and reduces setup complexity.
Text/Logos	Use engraved text ≥0.5 mm deep, with simple fonts	Small or decorative fonts may not machine cleanly.
Material Choice	Select materials based on strength and machinability	Examples: 6061-T6 aluminum (easy), stainless steel (difficult).

Why Choose Our Precision Machining Services

For Alcro, precision isn’t just a promise—it’s the foundation of everything we do. Whether you’re developing high-performance components or innovative applications,we’re committed to pursuing excellence to deliver results that exceed expectations.

Uncompromising Accuracy
We specialize in tight-tolerance machining, with capabilities down to ±0.001 mm. From prototypes to full production, every part we produce meets the most demanding specifications.
Advanced CNC Technology
Our facility is equipped with state-of-the-art multi-axis CNC machines, automated inspection systems and high-speed tooling—ensuring consistent quality, efficiency and scalability.
Engineering Support
Our experienced team collaborates with you from design to production, offering DFM advices to optimize cost, performance and lead time without compromising precision.

Fast Turnaround
Need parts fast? We offer rapid prototyping and short-run machining, backed by efficient workflows and responsive customer service to keep your project on schedule.
Rigorous Quality Control
Every part undergoes strict inspection protocols, including CMM measurement and full documentation, ensuring traceability and compliance with industry standards like ISO and AS.

Turn Your Designs Into Custom Parts Today

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Driven by customer-first mindset, fast response and technical excellence, we are committed to being your reliable, long-term partner in custom manufacturing.

sophia@alcrocn.com

+86 15338350382

6th North Street, Xiagang Community, Chang'an Town, Dongguan City, Guangdong Province, China.

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